path: root/src/ev-sidebar.c

/* this file is part of evince, a gnome document viewer
 *
 *  Copyright (C) 2004 Red Hat, Inc.
 *            (C) 2007 Jan Arne Petersen
 *
 *  Authors:
 *    Jonathan Blandford <jrb@alum.mit.edu>
 *    Jan Arne Petersen <jpetersen@jpetersen.org>
 *
 * Evince is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Evince is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02110-1301  USA.
 *
 * Thursday 03 May 2007: Bastien Nocera: Add exception clause.
 * See license_change file for details.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>

#include "ev-sidebar.h"

enum
{
    PAGE_COLUMN_ID,
    PAGE_COLUMN_TITLE,
    PAGE_COLUMN_NUM_COLS
};

struct _EvSidebarPrivate {
    GtkWidget *combobox;
    GtkWidget *notebook;
};

enum {
    CLOSED,
    CHANGED,
    LAST_SIGNAL
};

static int ev_sidebar_table_signals[LAST_SIGNAL] = { 0 };

G_DEFINE_TYPE (EvSidebar, ev_sidebar, GTK_TYPE_VBOX)

#define EV_SIDEBAR_GET_PRIVATE(object) \
        (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR, EvSidebarPrivate))

static void
ev_sidebar_class_init (EvSidebarClass *ev_sidebar_class)
{
    GObjectClass *g_object_class;
 
    g_object_class = G_OBJECT_CLASS (ev_sidebar_class);
       
    g_type_class_add_private (g_object_class, sizeof (EvSidebarPrivate));

    ev_sidebar_table_signals[CLOSED] =
        g_signal_new ("closed",
                G_TYPE_FROM_CLASS (g_object_class),
                G_SIGNAL_RUN_LAST,
                G_STRUCT_OFFSET (EvSidebarClass, closed),
                NULL, NULL,
                g_cclosure_marshal_generic,
                G_TYPE_NONE, 0);

    ev_sidebar_table_signals[CHANGED] =
        g_signal_new ("changed",
                G_TYPE_FROM_CLASS (g_object_class),
                G_SIGNAL_RUN_LAST,
                G_STRUCT_OFFSET (EvSidebarClass, closed),
                NULL, NULL,
                g_cclosure_marshal_generic,
                G_TYPE_NONE, 1, G_TYPE_STRING);

}

static void
ev_sidebar_close_clicked_cb (GtkWidget *widget,
                 gpointer   user_data)
{
    EvSidebar *ev_sidebar = EV_SIDEBAR (user_data);

    g_signal_emit (G_OBJECT (ev_sidebar),
            ev_sidebar_table_signals[CLOSED], 0, NULL);
    gtk_widget_hide (GTK_WIDGET (ev_sidebar));
}

static void
ev_sidebar_combobox_changed_cb (GtkComboBox *combo_box,
                gpointer   user_data)
{
    EvSidebar *ev_sidebar = EV_SIDEBAR (user_data);
    GtkTreeModel *model;
    GtkTreeIter iter;

    model = gtk_combo_box_get_model (combo_box);

    if (gtk_combo_box_get_active_iter (combo_box, &iter)) {
        GtkTreePath *path;
        gint *indices;

        path = gtk_tree_model_get_path (model, &iter);
        indices = gtk_tree_path_get_indices (path);

        if (indices != NULL) {
            gchar *page;

            gtk_notebook_set_current_page (GTK_NOTEBOOK (ev_sidebar->priv->notebook), indices[0]);
            gtk_tree_model_get (model, &iter, PAGE_COLUMN_ID, &page, -1);
            g_signal_emit (G_OBJECT (ev_sidebar), ev_sidebar_table_signals[CHANGED], 0, page);
            g_free (page);
        }

        gtk_tree_path_free (path);
    }

}

static void
ev_sidebar_init (EvSidebar *ev_sidebar)
{
    GtkTreeModel *page_model;
    GtkWidget *vbox, *hbox;
    GtkWidget *close_button;
    GtkCellRenderer *renderer;
    GtkWidget *image;

    ev_sidebar->priv = EV_SIDEBAR_GET_PRIVATE (ev_sidebar);

    /* data model */
    page_model = (GtkTreeModel *)
            gtk_list_store_new (PAGE_COLUMN_NUM_COLS,
                        G_TYPE_STRING,
                        G_TYPE_STRING,
                        GTK_TYPE_WIDGET,
                        G_TYPE_INT);

    /* create a 6 6 6 0 border with GtkBoxes */
    hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
    gtk_box_pack_start (GTK_BOX (ev_sidebar), hbox, TRUE, TRUE, 6);

    vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
    gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (hbox), gtk_box_new (GTK_ORIENTATION_VERTICAL, 0), FALSE, FALSE, 0);

    /* top option menu */
    hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
    gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
    gtk_widget_show (hbox);

    ev_sidebar->priv->combobox = gtk_combo_box_new_with_model (page_model);
    g_signal_connect (ev_sidebar->priv->combobox, "changed",
              G_CALLBACK (ev_sidebar_combobox_changed_cb),
              ev_sidebar);

    renderer = gtk_cell_renderer_text_new ();
    gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (ev_sidebar->priv->combobox), renderer, TRUE);
    gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (ev_sidebar->priv->combobox), renderer, "text", PAGE_COLUMN_TITLE);

    gtk_box_pack_start (GTK_BOX (hbox), ev_sidebar->priv->combobox, TRUE, TRUE, 0);
    gtk_widget_show (ev_sidebar->priv->combobox);

    g_object_unref (G_OBJECT (page_model));

    close_button = gtk_button_new ();
    gtk_button_set_relief (GTK_BUTTON (close_button), GTK_RELIEF_NONE);
    g_signal_connect (close_button, "clicked",
              G_CALLBACK (ev_sidebar_close_clicked_cb),
              ev_sidebar);

    image = gtk_image_new_from_stock (GTK_STOCK_CLOSE,
                      GTK_ICON_SIZE_MENU);
    gtk_container_add (GTK_CONTAINER (close_button), image);
    gtk_widget_show (image);
   
    gtk_box_pack_end (GTK_BOX (hbox), close_button, FALSE, FALSE, 0);
    gtk_widget_show (close_button);
   
    ev_sidebar->priv->notebook = gtk_notebook_new ();
    gtk_notebook_set_show_border (GTK_NOTEBOOK (ev_sidebar->priv->notebook), FALSE);
    gtk_notebook_set_show_tabs (GTK_NOTEBOOK (ev_sidebar->priv->notebook), FALSE);
    gtk_box_pack_start (GTK_BOX (vbox), ev_sidebar->priv->notebook,
                TRUE, TRUE, 0);
    gtk_widget_show (ev_sidebar->priv->notebook);
}

/* Public functions */

GtkWidget *
ev_sidebar_new (void)
{
    GtkWidget *ev_sidebar;

    ev_sidebar = g_object_new (EV_TYPE_SIDEBAR, NULL);

    return ev_sidebar;
}

/* NOTE: Return values from this have to be g_free()d */
char *
ev_sidebar_get_current_page (EvSidebar *ev_sidebar)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    char *id;

    g_return_val_if_fail (EV_IS_SIDEBAR (ev_sidebar), NULL);
    g_return_val_if_fail (ev_sidebar->priv != NULL, NULL);

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (ev_sidebar->priv->combobox));

    if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (ev_sidebar->priv->combobox), &iter)) {
        gtk_tree_model_get (model, &iter, PAGE_COLUMN_ID, &id, -1);

        return id;
    }

    return NULL;
}

static gboolean
ev_sidebar_get_iter_for_page_id (EvSidebar *ev_sidebar,
                 const char *new_page_id,
                 GtkTreeIter *iter)
{
    GtkTreeModel *model;
    gboolean valid;
    gchar *page_id;

    g_return_val_if_fail (EV_IS_SIDEBAR (ev_sidebar), FALSE);
    g_return_val_if_fail (ev_sidebar->priv != NULL, FALSE);
    g_return_val_if_fail (iter != NULL, FALSE);

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (ev_sidebar->priv->combobox));

    valid = gtk_tree_model_get_iter_first (model, iter);

    while (valid) {
        gtk_tree_model_get (model, iter, PAGE_COLUMN_ID, &page_id, -1);

        if (page_id != NULL && strcmp (new_page_id, page_id) == 0) {
            g_free (page_id);
            return TRUE;
        }
        g_free (page_id);

        valid = gtk_tree_model_iter_next (model, iter);
    }

    return FALSE;
}

void
ev_sidebar_set_current_page (EvSidebar *ev_sidebar, const char *new_page_id)
{
    GtkTreeIter iter;

    g_return_if_fail (EV_IS_SIDEBAR (ev_sidebar));
    g_return_if_fail (new_page_id != NULL);


    if (ev_sidebar_get_iter_for_page_id (ev_sidebar, new_page_id, &iter)) {
        gtk_combo_box_set_active_iter (GTK_COMBO_BOX (ev_sidebar->priv->combobox), &iter);
    }
}

void
ev_sidebar_add_page (EvSidebar   *ev_sidebar,
             const gchar *page_id,
             const gchar *title,
             GtkWidget   *main_widget)
{
    GtkTreeIter iter, iter2;
    GtkTreeModel *model;
       
    g_return_if_fail (EV_IS_SIDEBAR (ev_sidebar));
    g_return_if_fail (page_id != NULL);
    g_return_if_fail (title != NULL);
    g_return_if_fail (GTK_IS_WIDGET (main_widget));

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (ev_sidebar->priv->combobox));

    gtk_widget_set_sensitive (GTK_WIDGET (ev_sidebar), TRUE);

    gtk_widget_show (main_widget);  
    gtk_notebook_append_page (GTK_NOTEBOOK (ev_sidebar->priv->notebook), main_widget, NULL);

    gtk_list_store_insert_with_values (GTK_LIST_STORE (model), &iter, -1,
                PAGE_COLUMN_ID, page_id,
                PAGE_COLUMN_TITLE, title,
                -1);

    if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (ev_sidebar->priv->combobox), &iter2)) {
        gtk_combo_box_set_active_iter (GTK_COMBO_BOX (ev_sidebar->priv->combobox), &iter);
    }
}

void
ev_sidebar_remove_page (EvSidebar   *ev_sidebar,
            const gchar *page_id)
{
    GtkTreeIter iter;
    GtkTreeModel *model;
       
    g_return_if_fail (EV_IS_SIDEBAR (ev_sidebar));
    g_return_if_fail (page_id != NULL);

    model = gtk_combo_box_get_model (GTK_COMBO_BOX (ev_sidebar->priv->combobox));

    if (ev_sidebar_get_iter_for_page_id (ev_sidebar, page_id, &iter)) {
        GtkTreePath *path;
        gint *indices;

        path = gtk_tree_model_get_path (model, &iter);
        indices = gtk_tree_path_get_indices (path);

        g_assert (indices != NULL);
        gtk_notebook_remove_page (GTK_NOTEBOOK (ev_sidebar->priv->notebook), indices[0]);

        gtk_list_store_remove (GTK_LIST_STORE (model), &iter);

        if (gtk_tree_model_iter_n_children (model, NULL) != 0) {
            gtk_tree_path_prev (path);

            if (gtk_tree_model_get_iter (model, &iter, path)) {
                gtk_combo_box_set_active_iter (GTK_COMBO_BOX (ev_sidebar->priv->combobox), &iter);
            }
        } else {
            gtk_widget_set_sensitive (GTK_WIDGET (ev_sidebar), FALSE);
        }

        gtk_tree_path_free (path);
    }
}